I loko o ke kaʻina hana hoʻoheheʻe wela, ua hoʻomalu pono ʻia ka wela hoʻoheheʻe plastik i ka ʻōnaehana holo. Hiki i nā plastik ke kahe i loko o nā lua i kahi kūlana kūlike, e hopena i nā ʻāpana maikaʻi. ʻO nā ʻāpana hoʻoheheʻe wela ka maikaʻi o ka ʻīpuka, haʻahaʻa haʻahaʻa koena koʻikoʻi ma hope o ka wāwahi ʻana, a me ka liʻiliʻi deformation o nā ʻāpana. No laila, nui nā huahana kiʻekiʻe ma ka mākeke i hana ʻia e nā mold runner wela.

No ka mea, ʻo ka tungsten-molybdenum a me kāna mau mea hoʻohui i loaʻa i ka conductivity thermal kiʻekiʻe, ka ikaika kiʻekiʻe, ke kūpaʻa ʻana, ke kūpaʻa ʻana, a me ke kūpaʻa corrosion kiʻekiʻe, he mau mea kūpono lākou no ka hana ʻana i nā nozzles holo wela i nā mea hoʻoheheʻe injection e like me nā mīkini hoʻoheheʻe injection.